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All Journal SMARTek MEKTEK Jurnal Fisika Unand JGE (Jurnal Geofisika Eksplorasi) Jurnal GEOSAPTA Tadulako Science and Technology Journal Jurnal Riset dan Pengabdian Interdisipliner
Abdul Mukaddas
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Agriculture, Biological Sciences & Forestry Humanities Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Physics Social Sciences Other

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Studi Geolistrik dan Geologi Pada Daerah Rawan Gerakan Tanah Mukaddas, Abdul
SMARTek Vol 3, No 4 (2005)
Publisher : SMARTek

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (26.866 KB)

Abstract

Telah di lakukan penelitian di Cilebak Kuningan Jawa Barat guna mencari faktor – faktor penyebab terjadinya gerakan tanah untuk diidentifikasi dan diprediksi terhadap kestabilan lereng di daerah tersebut. Pada penelitian ini diterapkan metode geolistrik tahanan jenis dengan konfigurasi elektroda Wenner – Schlumberger untuk mengetahui ketebalan lapisan pelapukan  dan kedalaman bidang gelincir. Pengolahan data geolistrik dilakukan dengan bantuan Program Res2Dinv  untuk mencitrakan kondisi di bawah permukaan. Hasilnya ditafsirkan berdasarkan nilai tahanan jenis batuan. Dari penampang tahanan jenis untuk lintasan pengukuran dengan arah C – D dan E – F terdapat lapisan batuan dengan nilai tahanan jenis sekitar 3.1 Wm – 4.5 Wm dan 3.7 Wm – 6.7 Wm dengan kedalaman mencapai 10 – 20 meter. Lapisan ini  diduga sebagai batulempung kedap air yang dapat berperan sebagai bidang gelincir. Lapisan batuan yang  diduga sebagai lapisan lapuk ketebalannya mencapai sekitar 6 – 10 meter. Dari evaluasi terhadap beberapa aspek yang berkaitan dengan penyebab terjadinya  gerakan tanah seperti aspek hidrologi, geologi, topografi, tataguna lahan dan aspek geofisika, diperkirakan sebagai penyebab terjadinya gerakan tanah di Cilebak, antara lain curah hujan yang tinggi, kemiringan lereng perbukitan yang terjal, letak  bidang gelincir  yang dalam dan pengaruh tataguna lahan daerah
INTERPRETASI LAPISAN BATUAN BAWAH PERMUKAAN BERDASARKAN ANALISIS DATA GEOLISTRIK Mukaddas, Abdul
MEKTEK Vol 11, No 3 (2009)
Publisher : MEKTEK

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Abstract

The research aim is to procure lithology and depth rock that has water potentially contaned by using receptivity geolelectric of Shlumberger configuration. The project was conducted at the District of Beka which focused on 6 sample geoelectric points. Each point is restricted in the length area of 400 m. The geoelectric data processing was checked by available curve technique with helping inversion program. The processing based on responding of rock resistivity. Resistivity value of sand is between 3.5 and 11.5 Ohm-meter. Meaning that water potentially is available in the depth of around 40 m under land surface
ANALISIS PERBEDAAN PENAMPANG SEISMIK ANTARA HASIL PENGOLAHAN STANDAR DENGAN PENGOLAHAN PRESERVED AMPLITUDE Mukaddas, Abdul
MEKTEK Vol 7, No 3 (2005)
Publisher : MEKTEK

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Abstract

Landslide is one of the most types of slope movements of soil\rock often occur in Indonesia and resulting in damages such as in agriculture land, highways, structures and even casualties. From the researches landslides often take place on the rainy season,as well as when the rain is falling or after the rain stopped. This research will be done in two phases. First phase is a numerical modeling to simulate and predict slope hidrological behavior in respon to rainfall. The rainfalls applied for modeling are high and low intensity that are ï‚£ 70 mm/hour and 20 mm/day respectively some hours until days. The rainfall modeling results is used as the data for next phase that is slope stability analysis. Slope stability will be analiyzed at the initial condition, when raining and after the rain stopped. This research results the decreased of slope stability caused by the rain depends on the intensity and duration of the rain. The research obtains that the rain intensity of 70 mm/hour is the most potential cause to trigg the landslide than goes of 20 mm/day, 30 mm/hour and 50 mm/hour
INVESTIGASI KONTROL STRUKTUR GEOLOGI PADA MANIFESTASI GEOTERMAL DI DAERAH LOMPIO, DONGGALA, SULAWESI TENGAH Asrafil, Asrafil; Mukaddas, Abdul; Listianti, Ajeng; Jamil, Wisnu Prawiro Raharjo
Geosapta Vol 8, No 1 (2022): Januari 2022
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jg.v8i1.12133

Abstract

Lompio merupakan salah satu desa yang memiliki potensi geotermal non-vulkanik yang berada di Kabupaten  Donggala Provinsi Sulawesi Tengah. Potensi geotermal memunculkan manifestasi geothermal yang umumnya muncul pada zona permeable, yang sering dikaitkan dengan rekahan batuan yang disebabkan oleh struktur. Oleh karena itu, menarik untuk dilakukan investigasi terkait densitas dari zona rekahan (fracture) maupun sesar (fault) yang merupakan struktur melalui metode Fault and Fracture Density (FFD), guna memperoleh korelasi terhadap manifestasi geotermal yang muncul di daerah Lompio sebagai tujuan dari penelitian ini. Penelitian ini dilaksanakan melalui observasi lapangan (geologi permukaan) dan analisis data guna mengungkap kontrol struktur yang berlaku dan karakteristik dari manifestasi geotermal di Lompio. Hasil penelitian menunjukkan bahwa daerah Lompio memiliki manifestasi geotermal berupa mata air panas berada pada zona transisi intensitas kerapatan struktur (lineament) rendah ke tinggi, hal ini menunjukkan bahwa struktur tidak begitu dominan mengontrol kemunculan manifestasi geotermal berupa mata air panas. Karakteristik Mata air panas di daerah lompio memiliki pH 7,9 s.d. 9,6, konduktivitas cukup tinggi mencapai 10.4 s.d. 12,6 mS, dan temperatur air panas berkisar 65 s.d. 79°C, muncul pada endapan alluvium, tidak berwarna, memiliki bau belerang yang lemah, sedikit beruap, tidak ada sinter, dan sedikit asin.
STUDY OF ORE MINERALIZATION POTENTIAL IN METAMORPHIC ROCKS IN KAWATUNA AREA, PALU CITY, CENTRAL OF SULAWESI Asrafil, Asrafil; Mukaddas, Abdul; Puspita, Riska; Assidiqi, Muhammad; Rugayya, Sitti
JGE (Jurnal Geofisika Eksplorasi) Vol. 11 No. 1 (2025)
Publisher : Engineering Faculty Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jge.v11i1.484

Abstract

The Kawatuna area has a complex geological structure and lithological condition of metamorphic rock, which is estimated to be a weak zone for hydrothermal solutions to rise and then accumulate as mineralization of veins in the metamorphic rock. Based on this, it makes this area interesting to research. This research aims to identify metal ore minerals and the mineralization characteristics of ores in the research area. The method used is a geological survey of the surface and laboratory analysis through ore microscopic as well as mineral chemistry tests. Based on the results of the research study, it was found that in metamorphic rocks in the Kawatuna area, sulfide metal ore minerals were found including argentite (Ag2S), pyrite (FeS2), chalcopyrite (CuFeS2), sphalerite (ZnS), galena (PbS), and covelite minerals (CuS), Native elements ore minerals include gold (Au), silver (Ag), electrum (Au, Ag), and Oxide ore minerals in the form of hematite (Fe2O3). The mineralization formed is controlled by structures that produce fractures in the rock, which then produces mineralization as the veins of metamorphic rocks. The ore mineralization in the research area occurs through a hypogene process (the formation of a formation zone from primary ore minerals) and a supergene process stage (the formation of a formation or enrichment zone from secondary ore minerals).
Investigasi Bidang Gelincir Pada Daerah Rawan Longsor Di Ruas Jalan Tawaeli-Toboli Menggunakan Metode Geolistrik Tahanan Jenis Jayadi, Harsano; Mukaddas, Abdul; Meidji, Icha Untari
Jurnal Fisika Unand Vol 9 No 3 (2020)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.9.3.381-387.2020

Abstract

Telah dilakukan penelitian investigasi bidang gelincir pada daerah rawan longsor dengan metode geolistrik tahanan jenis 2D di jalan Tawaeli – Toboli dengan menggunakan konfigurasi Wenner dengan panjang lintasan 96 m dan spasi antar elektroda 6 m yang dianalisis dengan software Res2Dinv.  Selanjutnya dapat ditentukan struktur dan litologi bawah permukaan sehingga dapat memberikan informasi mengenai bidang gelincir. Hasil dari penelitian ini menunjukkan bahwa penyusun tanah di daerah penelitian adalah kerikil, batu pasir, dan genes. Nilai hambatan jenis setiap lapisan batuan yaitu kerikil berkisar antara 10 Ωm – 84 Ωm, lapisan batu pasir berkisar antara 84 Ωm – 158 Ωm, dan lapisan genes berkisar antara 232 Ωm – 528 Ωm. Pada wilayah penelitian terdapat lapisan genes yang diduga merupakan bidang gelincir. Bentuk bidang gelincir yang diperoleh pada wilayah penelitian yaitu jenis gelincir rotasi dengan arah longsoran mengarah ke arah jalan raya dengan kedalaman 7 m – 35 m untuk semua lintasan. Investigation of the slip surface has been carried out in landslide-prone areas using the 2D resistivity geoelectric method on the Tawaeli-Toboli road using the Wenner configuration with 96 meters of track length, and 6 m of electrode spacing analyzed with Res2DinV software. Furthermore, the subsurface structure and lithology can be determined to provide information about the slip plane. This study's results indicate that the soil compilers in the study area are gravel, sandstone, and genes. The value of electrical resistivity of each rock layer, namely gravel ranges from 10 Ωm - 84 Ωm, sandstone layer covers from 84 Ωm - 158 Ωm, and the genes layer ranges from 232 Ωm - 528 Ωm. In the research area, there are layers of genes that are thought to be the slip plane. The shape of the sliding plane obtained in the study area is the rotating slip with landslide direction leading to the highway with a depth of 7 meter - 35 meter for all trajectories.
Index Morphotectonic Of Morphology In The Patukuki Watershed Region, Peling Tengah District, Banggai Kepulauan Sukardan Tawil; Bayu Saputra; Abdul Mukaddas; Asrafil
Tadulako Science and Technology Journal Vol. 1 No. 2 (2021): Tadulako Science and Technology Journal
Publisher : LPPM Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/sciencetech.v1i2.17297

Abstract

Introduction: The Patukuki area in the Central Peling sub-district falls administratively within the geographical coordinates of 123°01'00" – 123°01'3" longitude and 01°24'00" – 01°27'00" latitude. Method: Channel Sinuosity (S) measures river influence on landscapes by comparing actual river length to valley length. Mountain-front sinuosity (Smf) evaluates mountain-front curvature using base and straight-line lengths. The Valley Floor Width to Width-to-height ratio (Vf) identifies regions of rapid uplift, with lower values indicating higher activity. The Asymmetric Factor (AF) detects tectonic tilting in drainage basins by comparing the area of the right-hand side sub-basin to the total area. Results and Discussion: Based on the analysis conducted, the findings are as follows: Channel Sinuosity analysis shows that sub-bases 1, 2, and 3 have high tectonic activity, while sub-base 5 has moderate activity, and sub-base 3 is low. Stream Morphology Frequency (Smf) analysis shows moderate tectonic activity in sub-bases 1, 3, 4, and 5, and sub-base 2 with an average Smf value of more than 1.5. Valley floor width to height ratio (Vf) shows low tectonic activity in all sub-bases. Anisotropy of Magnetic Susceptibility (AF) shows that sub-bases 1 and 5 have high tectonic activity, sub-bases 3 and 4 are moderate, and sub-base 3 is low. The IATR values of sub-bases 1, 4, and 5 are between 1.5 and less than 2, while sub-bases 2 and 3 show moderate tectonic activity with IATR values between 2 and less than 2.5.Conclusion: In summary, tectonic activity in the Patukuki watershed ranges from moderate to high based on the various analyzed indices.
Edukasi Ilmu Kebumian Dan Potensi Kebencanaan Geologi Bagi Siswa SMA Negeri 1 Sarjo Janat, Nunik Rezkiarti; Fitriana, Tati; Asrafil, Asrafil; Mukaddas, Abdul; Nugroho Uno, Djamal Adi
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Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jrpi.v2i4.35324

Abstract

Considering the geological complexity of Sulawesi and the limited exposure of students to basic geoscience knowledge in formal education, SMA Negeri 1 Sarjo, located in West Sulawesi and bordering Central Sulawesi, recognized the need to conduct a knowledge-sharing activity on earth science, geological resources, and geological hazards. This program invited academic experts from the Faculty of Engineering, Universitas Tadulako, to deliver educational materials tailored for high school students. The main objective was to enhance students’ understanding of geoscience concepts, introduce the diversity of geological resources, and increase awareness of geological hazards, particularly those prevalent in Sulawesi. The activity involved grade XII students through presentations, discussions, and interactive question-and-answer sessions. Students and teachers responded positively, indicating increased interest and comprehension of the topics presented. The positive feedback and appreciation expressed by the school, especially through the Vice Principal for Curriculum and Student Affairs, served as an indicator of the program’s success.
Co-Authors Asrafil Asrafil Asrafil Assidiqi, Muhammad bayu saputra Fitriana, Tati Harsano Jayadi Jamil, Wisnu Prawiro Raharjo Janat, Nunik Rezkiarti Listianti, Ajeng Meidji, Icha Untari Nugroho Uno, Djamal Adi Puspita, Riska Sitti Rugayya Sukardan Tawil